a very difficult 3-piece burr in a frame, first time showed for the design competition IPP 26 and it caused some sensation, because no earlier design were known before by these two Spanish designers; for the production of the first batch of the puzzle we changed a little bit the inner pieces to reduce the high level, but now in this production we can offer the original designed level 27 puzzle

difficulty

a level 27-2 puzzle with many difficult moves for the first ( last ) piece